论文信息 - THE EFFECT OF THE PRE-STRAINING AND AGEING ON TENSILE BEHAVIOUR OF MICROALLOYED STEELS

THE EFFECT OF THE PRE-STRAINING AND AGEING ON TENSILE BEHAVIOUR OF MICROALLOYED STEELS

Two commercially available medium carbon and low carbon microalloyed steel were evaluated in this study.The steels were cold strained in tension 5 % and were aged at 100-450 oC for 1 hour. Strained and agedspecimens were then retested to fracture and mechanical properties of steels were measured. Changes inmechanical properties such as ultimate tensile strength and yield strength were observed at ageing temperatures.This ageing is assoCiated with interaction between interstitial solutes and disloCations which are preferential sitesfor solute atom diffusion. Indications are that the medium carbon microalloyed forging steel is more susceptibleto strain ageing than the low carbon microalloyed steel as evidenced an increase in yield strength and tensilestrength.

Süleyman Gündüz

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